Electrical – Wiring washing machine motor

1. and 2.: The terminals 4, 5 and 6 are not to be connected to your VFD. This is indicated by the drawing, as there is no wire "leaving" the interconnected terminals. i.e. those are bridging terminals to build the correct wiring of all windings of the motor.

2. probably yes. Normally PE connectors should be designated by green/yellow, but I've seen it often as only green.

3. Depends from your wiring scheme on your premises. If you have combined neutral/protective-earth connect that to your VFD and your motors PE. If you have separate neutral / protective earth you have to connect the PE to your motor's PE terminal.

4. The PES is for EMC-purposes. It starts at your motor's housing and is connected back to the shielding cabling between the motor and the VFD. It will reduce electromagnetic interference. For this purpose you have to use shielded cables. Is it necessary? Probably you won't get any problems with not shielding it. But others may. So in my eyes not applying the appropriate measures for EMC is like letting my dog shit onto the green of my neighbours. So: just do it and use shielded wires. According to the datasheet your motor cable should be low capacitance (<75 pF/m wire-wire, <150 pF/m wire-shield).

Because there are only two wires with terminals at the end I am assuming it is single phase. If this is the cause, it doesn't matter how you hook up which wire goes to positive and which goes to ground. It will work fine either way.

If this is a 3 phase motor (I don't think it is) you can tell which phase is which by the amount of resistance between the wires.

As far as the capacitor you usually see on motors, that is to help with in rush current. The capacitor can be charged before hand and when the motor is starting the capacitor can help supply current so the motor doesn't draw as much current on start up.